Referenced CVEs:
CVE-2009-1832, CVE-2009-1833, CVE-2009-1834, CVE-2009-1835, CVE-2009-1836, CVE-2009-1837, CVE-2009-1838, CVE-2009-1839, CVE-2009-1840, CVE-2009-1841


Description:
===========================================================Ubuntu Security Notice USN-779-1 June 12, 2009firefox-3.0, xulrunner-1.9 vulnerabilitiesCVE-2009-1832, CVE-2009-1833, CVE-2009-1834, CVE-2009-1835,CVE-2009-1836, CVE-2009-1837, CVE-2009-1838, CVE-2009-1839,CVE-2009-1840, CVE-2009-1841===========================================================A security issue affects the following Ubuntu releases:Ubuntu 8.04 LTSUbuntu 8.10Ubuntu 9.04This advisory also applies to the corresponding versions ofKubuntu, Edubuntu, and Xubuntu.The problem can be corrected by upgrading your system to thefollowing package versions:Ubuntu 8.04 LTS: firefox-3.0 3.0.11+build2+nobinonly-0ubuntu0.8.04.1 xulrunner-1.9 1.9.0.11+build2+nobinonly-0ubuntu0.8.04.1Ubuntu 8.10: abrowser 3.0.11+build2+nobinonly-0ubuntu0.8.10.1 firefox-3.0 3.0.11+build2+nobinonly-0ubuntu0.8.10.1 xulrunner-1.9 1.9.0.11+build2+nobinonly-0ubuntu0.8.10.2Ubuntu 9.04: abrowser 3.0.11+build2+nobinonly-0ubuntu0.9.04.1 firefox-3.0 3.0.11+build2+nobinonly-0ubuntu0.9.04.1 xulrunner-1.9 1.9.0.11+build2+nobinonly-0ubuntu0.9.04.1After a standard system upgrade you need to restart Firefox and anyapplications that use xulrunner, such as Epiphany, to effect the necessarychanges.Details follow:Several flaws were discovered in the browser and JavaScript engines ofFirefox. If a user were tricked into viewing a malicious website, a remoteattacker could cause a denial of service or possibly execute arbitrary codewith the privileges of the user invoking the program. (CVE-2009-1392,CVE-2009-1832, CVE-2009-1833, CVE-2009-1837, CVE-2009-1838)Pavel Cvrcek discovered that Firefox would sometimes display certaininvalid Unicode characters as whitespace. An attacker could exploit this tospoof the location bar, such as in a phishing attack. (CVE-2009-1834)Gregory Fleischer, Adam Barth and Collin Jackson discovered that Firefoxwould allow access to local files from resources loaded via the file:protocol. If a user were tricked into downloading then opening a maliciousfile, an attacker could steal potentially sensitive information.(CVE-2009-1835, CVE-2009-1839)Shuo Chen, Ziqing Mao, Yi-Min Wang, and Ming Zhang discovered that Firefoxdid not properly handle error responses when connecting to a proxy server.If a remote attacker were able to perform a man-in-the-middle attack, thisflaw could be exploited to view sensitive information. (CVE-2009-1836)Wladimir Palant discovered Firefox did not check content-loading policieswhen loading external script files into XUL documents. As a result, Firefoxmight load malicious content under certain circumstances. (CVE-2009-1840)It was discovered that Firefox could be made to run scripts with elevatedprivileges. If a user were tricked into viewing a malicious website, anattacker could cause a chrome privileged object, such as the browsersidebar, to run arbitrary code via interactions with the attackercontrolled website. (CVE-2009-1841)





More...